@inproceedings{caggianeseInvestigationLeapMotion2016,

title = {An Investigation of Leap Motion Based 3D Manipulation Techniques for Use in Egocentric Viewpoint},

author = { Giuseppe Caggianese and Luigi Gallo and Pietro Neroni},

editor = { Lucio Tommaso De Paolis and Antonio Mongelli},

isbn = {978-3-319-40650-3 978-3-319-40651-0},

year  = {2016},

date = {2016-06-01},

urldate = {2016-12-06},

booktitle = {Augmented Reality, Virtual Reality, and Computer Graphics},

volume = {9769},

pages = {318--330},

publisher = {Springer International Publishing},

address = {Lecce, Italy},

abstract = {In this paper we investigate suitable 3D manipulation techniques for a new generation of depth trackers exploitable in ego-vision for an immersive virtual environment. After presenting the specific configuration and hardware used, the paper focuses on an investigation into the advantages and disadvantages of the various techniques in order to choose the one most suitable for the manipulation of an object in an immersive virtual environment. We have faced the problem of canonical manipulation which includes, besides the selection, the positioning and rotation. Two different approaches are described allowing respectively a direct or constrained manipulation of the virtual object. Our aim is to evaluate the perceived usability of the two proposed manipulation techniques in the specific configuration and for this reason qualitative data have been gathered using the System Usability Scale questionnaire. The results show a different level of difficulty perceived by the testers between the two canonical manipulation techniques and a general preference for techniques that prove to be less tiring.},

keywords = {3D interaction, Ego-Vision, Leap motion, Questionnaire evaluation, Virtual Reality},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{caggianeseDesignPreliminaryEvaluation2015,

title = {Design and Preliminary Evaluation of Free-Hand Travel Techniques for Wearable Immersive Virtual Reality Systems with Egocentric Sensing},

author = { Giuseppe Caggianese and Luigi Gallo and Pietro Neroni},

editor = { Lucio Tommaso De Paolis and Antonio Mongelli},

isbn = {978-3-319-22887-7 978-3-319-22888-4},

year  = {2015},

date = {2015-09-01},

urldate = {2016-12-06},

booktitle = {Augmented and Virtual Reality},

volume = {9254},

pages = {399--408},

publisher = {Springer International Publishing Switzerland},

address = {Lecce, Italy},

series = {Lecture Notes in Computer Science (LNCS)},

abstract = {The recent availability of low cost wearable displays coupled with contactless motion sensing devices is leveraging the design of immersive and highly interactive virtual environments. In such virtual worlds, the human-computer interface, and particularly the navigation technique, plays a crucial role. This paper presents a preliminary evaluation of traveling constraints in egocentric vision. In more detail, we describe and compare in an ego-vision scenario two travel techniques, both based on a combination of visual controls and hand gestures but proving to be different in terms of the number of travel directions allowed to the user and of the travel velocity control. The experimental results indicate that, despite the users appreciating the possibility of controlling the travel direction with both head and arrows, not all the directions are considered useful in the same way. However, direct control of the velocity proves to affect positively the navigation experience in all the considered scenarios.},

keywords = {3D interaction, Comparative evaluation, Ego-Vision, Leap motion, Traveling techniques},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{caggianeseDesignPreliminaryEvaluation2014,

title = {Design and Preliminary Evaluation of a Touchless Interface for Manipulating Virtual Heritage Artefacts},

author = { Giuseppe Caggianese and Luigi Gallo and Giuseppe De Pietro},

doi = {10.1109/SITIS.2014.44},

isbn = {978-1-4799-7978-3},

year  = {2014},

date = {2014-11-01},

urldate = {2016-12-06},

booktitle = {Signal-Image Technology and Internet-Based Systems (SITIS), 2014 Tenth International Conference On},

pages = {493--500},

publisher = {IEEE},

abstract = {In this paper, an interactive virtual reality (VR) system, realized with the aim of improving the dissemination and presentation of cultural artefacts, is presented. By using off-the-shelf devices, the system provides the users with an interface where a computer generated representation of a cultural artefact can be manipulated in a touch less way. The proposed system could be a useful instrument complementary to a visit to an actual exhibition without requiring any structural intervention, and allowing the user to become an active actor, able to enjoy different prospectives and all the details of the artefact. The paper describes the hardware and software system components, and details the interface specifically designed to obtain a simple and immediate exploration of a cultural heritage artefact. Furthermore, the paper provides the results of a preliminary evaluation of the usability of the interface which revealed up a significant difference between younger and older adult users.},

keywords = {3D interaction, Cultural heritage, system usability evaluation, Touchless interaction},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{galloStudyDegreesFreedom2013,

title = {A Study on the Degrees of Freedom in Touchless Interaction},

author = { Luigi Gallo},

doi = {10.1145/2542355.2542390},

isbn = {978-1-4503-2629-2},

year  = {2013},

date = {2013-11-01},

booktitle = {SA '13 SIGGRAPH Asia 2013 Technical Briefs},

pages = {28},

publisher = {ACM},

address = {Hong Kong, Hong Kong},

abstract = {During the last few years, we have been witnessing a widespread adoption of touchless technologies in the context of surgical procedures. Touchless interfaces are advantageous in that they can preserve sterility around the patient, allowing surgeons to visualize medical images without having to physically touch any control or to rely on a proxy. Such interfaces have been tailored to interact with 2D medical images but not with 3D reconstructions of anatomical data, since such an interaction requires at least three degrees of freedom. In this paper, we discuss the results of a user study in which a mouse-based interface has been compared with two Kinect-based touchless interfaces which allow users to interact with 3D data with up to nine degrees of freedom. The experimental results show that there is a significant relation between the number of degrees of freedom simultaneously controlled by the user and the number of degrees of freedom required to perform, in a touchless way, an accurate manipulation task.},

keywords = {3D interaction, DOF, Touchless interaction, User study},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{galloGloveBasedInterface3D2010,

title = {A Glove-Based Interface for 3D Medical Image Visualization},

author = { Luigi Gallo},

editor = { Robert J. Howlett and Lakhmi C. Jain and George A. Tsihrintzis and Ernesto Damiani and Maria Virvou and Robert J. Howlett and Lakhmi C. Jain},

doi = {10.1007/978-3-642-14619-0_21},

isbn = {978-3-642-14619-0},

year  = {2010},

date = {2010-07-01},

urldate = {2010-07-01},

booktitle = {Intelligent Interactive Multimedia Systems and Services},

volume = {6},

pages = {221--230},

publisher = {Springer-Verlag Berlin Heidelberg},

address = {Baltimore, USA},

series = {Smart Innovation, Systems and Technologies},

abstract = {In this paper, a low cost and portable 3D user interface for exploring medical data is presented. By means of a data glove, equipped with five bend sensors and an accelerometer, and a Wiimote, which tracks additional InfraRed Light Emitting Diodes placed on the glove, 3D imaging data can be visualized and manipulated in a semi-immersive virtual environment. The paper also details the interaction techniques we specifically designed for a medical imaging scenario and provides implementation details of the integration of the interface in an open-source medical image viewer.},

keywords = {3D interaction, Data glove, Healthcare, Visualization},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{galloWiiRemoteenhancedHandComputer2009,

title = {Wii Remote-enhanced Hand-Computer Interaction for 3D Medical Image Analysis},

author = { Luigi Gallo and Mario Ciampi},

doi = {10.1109/CTIT.2009.5423137},

isbn = {978-1-4244-5755-7},

year  = {2009},

date = {2009-12-01},

booktitle = {CTIT '09: Proceedings of International Conference on the Current Trends in Information Technology},

pages = {85--90},

publisher = {IEEE Computer Society},

address = {Dubai, United Arab Emirates},

abstract = {In this paper, we introduce a low cost, not cumbersome, 3D user interface for exploring medical data. 3D imaging data can be manipulated in a semi-immersive virtual environment by means of an off-the-shelf wireless data glove equipped with an additional infrared LED. The LED is tracked by a Wii Remote, which is able to provide accurate positional information with no need for further six degrees of freedom position trackers. We also describe the interaction techniques we have designed specifically for a medical imaging scenario and provide some implementation details of the integration of the interface in an open-source image processing software for medical research.},

keywords = {3D interaction, Data glove, Healthcare, Visualization, Wiimote},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{galloNaturalInterfaceVirtual2008,

title = {Toward a Natural Interface to Virtual Medical Imaging Environments},

author = { Luigi Gallo and Giuseppe De Pietro and Antonio Coronato and Ivana Marra},

doi = {10.1145/1385569.1385651},

isbn = {978-1-60558-141-5},

year  = {2008},

date = {2008-05-01},

booktitle = {AVI '08 Proceedings of the Working Conference on Advanced Visual Interfaces},

pages = {429--432},

publisher = {ACM New York, NY, USA},

address = {Napoli, Italy},

abstract = {Immersive Virtual Reality environments are suitable to support activities related to medicine and medical practice. The immersive visualization of information-rich 3D objects, coming from patient scanned data, provides clinicians with a clear perception of depth and shapes. However, to benefit from immersive visualization in medical imaging, where inspection and manipulation of volumetric data are fundamental tasks, medical experts have to be able to act in the virtual environment by exploiting their real life abilities. In order to reach this goal, it is necessary to take into account user skills and needs so as to design and implement usable and accessible human-computer interaction interfaces. In this paper we present a natural interface for a semi-immersive virtual environment. Such interface is based on an off-the-shelf handheld wireless device and a speech recognition component, and provides clinicians with intuitive interaction modes for inspecting volumetric medical data.},

keywords = {3D interaction, Medical Imaging, Virtual Reality, VTK, Wireless},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{galloUserFriendlyInspectionMedical2008,

title = {User-Friendly Inspection of Medical Image Data Volumes in Virtual Environments},

author = { Luigi Gallo and Giuseppe De Pietro and Ivana Marra},

doi = {10.1109/CISIS.2008.33},

isbn = {0-7695-3109-1},

year  = {2008},

date = {2008-03-01},

booktitle = {CISIS '08: Proceedings of the International Conference on Complex, Intelligent and Software Intensive Systems},

pages = {749--754},

publisher = {IEEE Computer Society, Los Alamitos, CA, USA},

address = {Polytechnic University of Catalonia, Spain},

abstract = {In many fields of medicine interactive virtual environments can offer enhanced visualization and manipulation of three-dimensional objects, reconstructed from high-quality scans of human organs. Stereoscopic systems provide users with a natural depth perception about the spatial nature of the structures of interest; moreover advanced user-friendly interfaces, by allowing a natural and intuitive interaction, can strengthen the feeling of being immersed, so to offer clinicians the possibility to act how they do in the real life. In order to enhance the sense of realism specially in medical computer-assisted education, training and diagnostic fields, it is necessary to have a system in which every action can be executed directly into the 3D world without switching to a 2D visualization mode. In this paper we present new interaction techniques to select and extract a volume-of-interest (VOI) in a semi-immersive interactive environment, by using a user-friendly wireless interface, suitable to implement pointing and manipulation features with 6 DOF.},

keywords = {3D interaction, Healthcare, Medical Imaging, Virtual Reality, VOI},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{gallo3DInteractionVolumetric2008,

title = {3D Interaction with Volumetric Medical Data: Experiencing the Wiimote},

author = { Luigi Gallo and Giuseppe De Pietro and Ivana Marra},

doi = {10.4108/ICST.AMBISYS2008.2880},

isbn = {978-963-9799-16-5},

year  = {2008},

date = {2008-02-01},

booktitle = {2008 1st International Conference on Ambient Media and Systems (Ambi-Sys)},

pages = {1--6},

publisher = {ICST},

address = {Quebec City, Quebec, Canada},

abstract = {Three-dimensional virtual environments are becoming more and more important for the inspection of volumetric medical data reconstructed from slices of images coming from Magnetic Resonance Imaging (MRI), Computer Tomography (CT), Positron Emission Tomography (PET) instrumentations. The possibility to visualize and interact with three-dimensional reconstructed organs while being immersed into a virtual environment, provides doctors a very naturalistic way to investigate patient's anatomy. However, most 3D user interfaces for immersive and semiimmersive virtual reality applications lack in usability or make not possible a user-friendly interaction. In this paper we present new flavors of existing 3D interaction techniques specifically designed for interacting with volumetric medical data in a semi-immersive virtual environment by using the Nintendo Wiimote controller as 3D user interface.},

keywords = {3D interaction, Healthcare, Manipulation, Pointing, Usability, Virtual Reality, Wireless},

pubstate = {published},

tppubtype = {inproceedings}

}